/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.flink.runtime.statistics

import javax.servlet.http.HttpServletRequest

import org.apache.flink.api.common.JobID
import org.apache.flink.runtime.executiongraph.ExecutionGraph
import org.apache.flink.runtime.messages.ExecutionGraphMessages.{ExecutionStateChanged, JobStatusChanged}

abstract class AbstractCentralStatisticsHandler extends Serializable {
  def open(jobID: JobID, executionGraph: ExecutionGraph) {}
  def handleStatistic(statistic: CustomStatistic)
  def handleExecutionStateChanged(executionStatus: ExecutionStateChanged) {}
  def handleJobStatusChanged(jobStatus: JobStatusChanged) {}
  def close {}

  // web frontend
  def hasWebFrontend: java.lang.Boolean = { false }
  def webFrontendName: java.lang.String = { "" }
  def webFrontendFile: java.lang.String = { "" }
  def webFrontendHandler(req: HttpServletRequest): java.lang.String = { "" }
  def webFrontendArchive: java.lang.String = { "" }
}
